Device for replacing valve-stem guides for automobiles



Now 27,1923. 1,475,830

W- P. JAMESON DEVICE FOR REPLACING VALVE STEM GUIDES FOR AUTOMQBILES Filed y 25. 1922 /N VENTOI? W LLIAM PdAussalv g I 3 I L-wi I 5 I l H 6.4.

Fatented Nov. 27, 1923.

parse stares p 1.47am PATENT OFFICE.

WILLIAM P. Jameson, or SANTA ANA, CALIFORNIA.

DEVICE FOR REPLACING VALVE-STEM GUIDES FOR AUTOMOBILES.

Application filed May 25, 1922. Serial No. 563,714.

To all whom it may concern:

Be it known that I, lVILLrAMP. AMESON, a citizen of the United States, residing at 'lanta Ana, in the county of Orange and State of California, have invented new and useful Improvements in Devices fo Replacing ValveStem Guides for Automobiles, of which the following is a specification.

This invention relates to means for pulling the valve stem guides of internal combustion engines into their proper positions in the engine head.

It is broadly an object of the present in vention to provide a simple, substantial, practical and rapidly operative means whereby the usual tubular valve stem guide for poppet valves of internal combustion engines can be quickly drawninto the tubular hub provided therefor with respect tothe intake and exhaust passages of an engine.

Especially, it is an object of the present invention to provide a device of few parts.

that may be quickly assembled in relation to a valve guide sleeve and upon the engine head, and which device includes an elongated Shank member adapted to be passed through the guide and thence up through the manifold side of the engine head to be engaged by a complementary device which when operated will serve to draw the stem guide into final position.

Other objects will be made manifest in the following specification of embodiments of the invention illustrated in the accompanying drawings, in which Figure l is a vertical section through a portion of an engine head and manifold and showing the device applied and in use.

Fig. 2 is a top plan view of a capstan nut.

Fig. 3 is a side elevation of the same.

Fig. 4. is a side elevation of a bridge member upon which the capstan nut is rotatably mounted.

Fig. 5 is a longitudinal central section through a valve stem and guide and manifold port showing the adaptation of a moditied form of the device.

Fig. 6 is a plan of the capstan device utilized in the embodiment shown in Fig. 5.

Fig. 7 i a side elevation of the device of F i 6.

8 is a plan view of the bridge and nut member of Fig. 5.

Fig. 9 is a central longitudinal section of the nut member of Fig. 5.

In the assembly of internal combustion engines of the kind em 310 in )0 Jet valves it is usual to introduce a sleeve or tubular member forming a guide which. is adapted to be snugly driven intothe hub or socket H provided as for instance at the lower portion of a manifold M provided at one side V of the motor cylinders G. The guides G are usually provided with flanges F to be drawn up tight against the contiguous end face of therespective hub H. After the guide G has been aro )erl' mounted in aosition the poppet valve stem not shown is then inserted for operation.

The present invention consists broadly of an elongated shank 2 having a shouldered part or head 3 at one end to be drawn up against the adjacent end of the guide G when the shank 2 has been passed therethrough.

In the preferred form of the invention, the shank has a threaded upper end at. This end is adapted to be passed up through the manifold of the engine and through a bridge or supporting member 5 which may consist of a disc having a shoulder to seat upon the rim of the usual cup seat S provided axially above the guide hub H. This bridge member consists of a support through which the threaded portion 4 of the drag shank2 freely passe and above which it extends to receive a nut 6. This is designed to be engaged by any suitable instrument or tool whereby the nut may be rotated while supported on the member 5 and thereby operate to draw the drag screw 2 upwardly and thus pull the guide into its final position. In Figs. 2 and 3, the nut 6 is provided with capstan sockets 6 to receive a pin or other instrument by which the capstan nut 6 can be rotated. The lower face of this nut is shown as recessed at 6 to receive the circular hub portion 5 so that the screw portion l of the shank is maintained clearcf the bore through the bridge 5.

After the guide has been drawn to its final position, the capstan nut 6 is run off of the threads 4. and then the drag shank 2 is freely removed downwardly through the guide.

A somewhat modified form of the inven tion is shown in Figs. 5 to 9 inclusive wherein the elongated shank 2' is thread less and has a shoulder forming collar or member 3. while the upper end is provided with a head 3 The upper head of the drag shank 2' engages upon the contiguous portion of a capstan-like member 6" provided with pin sockets 0r receivers 6', and this capstan member has a threaded central screw portion 6 which engages a threaded hub portion 5* of a supporting member or bridge 5 which is designed to fit upon the cap seat S oi an engine. v

In this form of the instrument, the capstan screw 6 is run down through the member 5 to a desired distance and the collar 3' being removed from the shank 2, this latter is passed down through the screw part 6. Then the guide G is slipped onto the downwardly extending end of the shank 2 and the collar 3 is then again applied. After this capstan member 6* is rotated in such direction as to advance the capstan member 6 upwardly through the support 5 and at the same time pull the guide G into its position in the hub H. As soon as the guide has been seated the retaining collar 3 is removed from the shank 2' and this latter is pulled up through the manifold as the supporting bridge 5 is lifted from its seat.

Various modifications and changes may be resorted to within the spirit of the invention as claimed.

7 tion of the threaded parts consisting of an elongated drag shank adapted to be passed through the manifold and guide receiving portion and upon which shank the guide is adapted to be supported, and means for pulling the shank with the applied guide into seating position for the guide, said means consisting of a supporting bridge member applicable to the usual capseat in the manifold for a respective port and having a recessed rim to fit said port, and means rotatably supported thereon and operatively engaging said shank so that upon relative rotation as to the supporting member the shank will be shifted axially.

2. A device for pulling a poppet stem guide to its final seat in a manifold of an internal combustion engine said device comprising an elongated shank adapted to pass through the said seat and to receive the guide to be seated a bridge member adapted to be seated upon a. portion of the manifold in axial alinement with the guide seat, said bridge member having a centering rim, and means engageable with the shank and supported upon said member and including threaded parts whereby upon relative rotathe shank will be pulled to seat the guide.

In'testimony whereof I have signed my name to thi specification.

W. P. JAMESON. 

